What is the difference between heat and temperature?

• A. Temperature measures how hot something is; heat is energy transferred due to temperature difference.
• B. Heat measures how hot something is; temperature is energy transferred due to difference.
• C. They are the same.
• D. Temperature is energy stored in matter.

Answer: (A)

Heat and temperature are related but describe different things. Temperature measures how hot something is; it reflects the average kinetic energy of the particles in a substance. Heat, on the other hand, is energy in transit. It moves between objects only because there is a temperature difference, flowing from the hotter to the cooler object until they reach the same temperature.

So temperature is a property that tells us about the thermal state, while heat is the actual energy moving because of that state. This is why two objects can share a temperature but contain different amounts of energy, depending on their mass and material. The idea that heat measures how hot something is, or that temperature is energy stored, isn’t accurate.